<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>

  <body>
    <script>
      //请实现以下效果
      function add(a, b, c) {
        return a + b + c;
      }
      // console.log(add.length);

      const res = add(1, 2, 3); // 6

      const curry = (fn) => {
        let judge = (...args) => {
          if (args.length === fn.length) return fn(...args);
          return (...arg) => judge(...args, ...arg);
        };
        return judge;
      };

      let addCurry = curry(add);

      // console.log(addCurry);
      const res2 = addCurry(1)(2)(3); // 6

      console.log(res2);
    </script>
  </body>
</html>
